Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 5489483 | Porous sintered bodies and solid oxide fuel cells using such porous sintered bodies as air electrodes A porous sintered body is composed of a perovskite-type composite oxide, wherein A-site of the composite oxide are occupied by one or more kinds of first metallic elements selected from the group consisting of calcium and strontium, one or more kinds of s... | 02/06/1996 |
